fart

Meaning: to release gas from the anus (v.) | a release of gas from the anus (n.)

For example:

Did you know that one of the main causes of global warming is cows farting?

We were driving home when someone did a fart. It smelled so bad that we had to open the windows.

Note: This word is quite offensive and should only be used in private among close friends. If one really must refer to a flatulent occurrence in public or during a formal occasion, we would suggest using the less-offensive alternative "breaking wind".